2585878705 has 16 divisors (see below), whose sum is σ = 3128900544. Its totient is φ = 2051524800.

The previous prime is 2585878649. The next prime is 2585878709. The reversal of 2585878705 is 5078785852.

It is a de Polignac number, because none of the positive numbers 2^k-2585878705 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2585878709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439030 + ... + 444880.

It is an arithmetic number, because the mean of its divisors is an integer number (195556284).

Almost surely, 2^2585878705 is an apocalyptic number.

It is an amenable number.

2585878705 is a deficient number, since it is larger than the sum of its proper divisors (543021839).

2585878705 is a wasteful number, since it uses less digits than its factorization.

2585878705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6576.

The product of its (nonzero) digits is 6272000, while the sum is 55.

The square root of 2585878705 is about 50851.5359158403. The cubic root of 2585878705 is about 1372.5748909315.

The spelling of 2585878705 in words is "two billion, five hundred eighty-five million, eight hundred seventy-eight thousand, seven hundred five".